include/linux/swapfile.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _LINUX_SWAPFILE_H
   3 #define _LINUX_SWAPFILE_H
   4
   5 /*
   6  * these were static in swapfile.c but frontswap.c needs them and we don't
   7  * want to expose them to the dozens of source files that include swap.h
   8  */
   9 extern spinlock_t swap_lock;
  10 extern struct plist_head swap_active_head;
  11 extern struct swap_info_struct *swap_info[];
  12 extern int try_to_unuse(unsigned int, bool, unsigned long);
  13 extern unsigned long generic_max_swapfile_size(void);
  14 extern unsigned long max_swapfile_size(void);
  15
  16 #endif /* _LINUX_SWAPFILE_H */